Permutations Problem
https://www.hackerearth.com/practice/data-structures/advanced-data-structures/trie-keyword-tree/practice-problems/algorithm/online-k-mex-007daa77/description/ I am not getting how to answer each query efficiently in this! Please someone come to my rescue!
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SLIMSHADYNICK | 2020-03-21 18:19:01 | 276 | Initial revision (published) |
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